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Finding the Fourth Proportional to 119.56, 179.03 and 78.86

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Solution

The fourth proportional to 119.56, 179.03 and 78.86 is: 118.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    119.56 : 179.03 = 78.86 : x
  2. Step 2: Convert to fraction form
    119.56/179.03 = 78.86/x
  3. Step 3: Cross multiply
    119.56x = 179.03 × 78.86
  4. Step 4: Simplify right side
    119.56x = 14,117.61
  5. Step 5: Solve for x
    x = 14,117.61/119.56
  6. Step 6: Final answer
    x = 118.08

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